Results 91 to 100 of about 536,183 (317)
On a coefficient problem for bi-univalent functions [PDF]
, 1967 Mordechai Lewin
openalex +2 more sources
Recent Advances in Wide‐Bandgap Perovskite Solar Cells
Advanced Materials, EarlyView.Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley +1 more source
Some new inequalities for univalent functions [PDF]
arXiv, 2018 By use of a modified Nunokawa's lemma, we obtain some new conditions for univalence. Also, some sharp inequalities concerning univalent functions are presented.
arxiv
Advanced Materials, EarlyView.This review provides the state‐of‐the‐art overview of halide perovskite‐based photocatalysts for hydrogen production from water and halogen acid solutions, CO2 reduction into value‐added chemicals, and organic chemical transformations. Different types of halide perovskite photocatalysts and their relative efficiencies for hydrogen generation and CO2 ...
Siddharth Singh +8 more
wiley +1 more source
Univalent harmonic functions defined by Salagean integral operator with respect to symmetric points
Le Matematiche, 2012 In this paper, we define and investigate a subclass of univalent harmonic functions defined by Salagean integral operator with respect to symmetric points.
Sheza El-Deeb +3 more
doaj
Construction of subclasses of univalent harmonic mappings [PDF]
arXiv, 2012 Complex-valued harmonic functions that are univalent and sense-preserving in the open unit disk are widely studied. A new methodology is employed to construct subclasses of univalent harmonic mappings from a given subfamily of univalent analytic functions. The notion of harmonic Alexander integral operator is introduced.
arxiv
DNA‑Directed Assembly of Photonic Nanomaterials for Diagnostic and Therapeutic Applications
Advanced Materials, EarlyView.DNA‐directed assembly offers a powerful strategy for constructing structured photonic nanomaterials with precise spatial control. This review provides a comprehensive overview of recent advancements in DNA‐assembled photonic nanomaterials for diagnostics and therapeutics, highlighting key design principles, functionalization strategies, and optical ...
Longjiang Ding +5 more
wiley +1 more source
Asymptotic Conformality and Polygonal Approximation
AxiomsUnivalent functions with asymptotically conformal extension to the boundary form a subclass of functions with quasiconformal extension with rather special features.
Samuel L. Krushkal
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Coefficient problem for certain subclasses of bi-univalent functions defined by convolution [PDF]
Mathematica Moravica, 2016 In this paper, we consider a general subclass HλΣ (h, β) of bi-univalent functions. Bounds on the first two coefficients اa2ا and اa3ا for functions in HλΣ (h, β) are given. The main results generalize and improve a recent one obtained by Srivastava [18].
Altınkaya Sahsene, Yalçın Sibel
doaj
Sufficient conditions for univalence of analytic functions [PDF]
arXiv, 2013 The article discusses criteria for univalence of analytic functions in the unit disc. Various families of analytic functions depending on real parameters are considered. A unified method for creating new sets of conditions ensuring univalence is presented. Applying this method we are able to find several families of new sharp criteria for univalence.
arxiv